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Xperia SP Android 4.1.2 12.0.A.2.245 firmware update rolled out.
Update available over PC Companion and SUS.
Changelog :-
1 - New Small Apps.
2 - Semi - transparent bars - menu and notification bar on homescreen.
3 - Quick Settings option.
4 - Improve camera, pics in low light improved.
Update - Global update for Xperia SP C5302 HSPA + and C5303 LTE Version, Confirmed in India, Vietnam.
It looks very similar to Xperia Z android 4.2.2 update.
Have you got this update ?
Please mention any more changelog you see ??
You update region please...
led notifications stopped working after update which is quite disappointing
Yeah. Noticed that too... I don't know if it's a bug or what, but BEFORE the update, my Xperia SP led notification light works even if the STAMINA is ON. When notification is on, the THREE lights activate and starts fading in and out.
But now, AFTER the update, it doesn't work with STAMINA mode. Only works when STAMINA is OFF. Also, when notification is on, only ONE light (middle) glows, and blinks (light off, light on) instead of fades.
Upon checking, STAMINA mode is supposed to work that way, but I don't know how my led notification works before and the way it blinks is different now.
I think the illumination bar not lighted in stamina mode after upgrade is untrue. Even before the upgrade the illumination bar is not working in stamina mode. Could someone else further verify this?
I think some users experienced that. I for one, can confirm that notification lights worked in stamina mode before the update. But I also know that stamina mode SHOULD prevent it. That's why I want to know how to exclude the led light from stamina. It's a very useful feature for me, since I dont have to unlock the phone just to check for messages. 
Got the update yesterday in Pakistan, wow its very cool and amazing, really love it. This update includes some useful changes and also fixed the touch screen un-responsive issue greatly. This update make my phone super fast and touch screen response is very good as well, thanks SONY
I am getting the update notification in the PC companion but no over the air update notifications have been received by me! Please help I want to update my xperia sp.
Plus the update is taking around 3hours.
does anyone get update after Xperia SP Android 4.1.2 12.0.A.2.245 firmware i can't find the update as this website says http://www.xperiaguide.com/2013/08/14/ptcrb-certified-xperia-sp-c5302-c5303-12-0-a-2-250-firmware-up... ......please inform about the update ................
I think I have found some annoying bug about led illumination.
Before the update, when screen is off, if any notification occurs (unread SMS, facebook notifications, WhatsApp notifications etc.) led illumination was blinking continuously with 4-5 seconds interval. Unfortunately after the update, it only blinks once at the notification occuring time, no continuous blinking. It seems led notification feature ruined. By the way STAMINA and other power saving modes are all off.
Also I faced another issue again with led illumination. As some of you might already know, sony has a service test menu accessed by dialing *#*#7378423#*#* and there under service tests menu, there is a test called LED/Illumination. Before the upgrade, when I run this test, led illumination bar was blinking synchronously with display backlight. But after the upgrade this test does no effect on led illumination. I mean leds doesn't blink any more while running test.
As far as I test the new firmware, I will post my experiences.
By the way, it seems touchscreen lag has been resolved.
The link you mentioned says that :-
PTCRB certified Xperia SP C5302, C5303, C5306 12.0.A.2.250 firmware – Update
It means that new update has been certifed only, it has not been rolled out. ( IT may roll out in future )
in Xperia SP Android 4.1.2 12.0.A.2.245 firmware there is also a change in the lockscreem animation .....it look nice but it is hard to notice ....if sony slow down the animation to a little bit nano second it will be great and can be nice look.............................. please try it sony ....................