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Perhaps. we can expect 2-3 updates. one will be a minor update for bug fixes and other 4.2.2
by november 2013 i think our support for xperia P will be over do its doubtfull if we will get 4.2.2 but lets hope we do!
Going by the amount of new devices sony has released i dont feel we would get 4.2.2 this soon and i did read somewhere the mali 400 gpu in our device is outdated cos Xperia J (Single core 1Ghz, Adreno) got JB 4.1.2 but Xperia sola/ Xperia U(Dual core 1Ghz,,Mali 400) didnt get the JB update. So either its the ageing Novathor or most probably MALI 400.
In India here we have local companies providing devices with JB 4.2.2 for say 10k-14k and my Sony which i bought for 25k is on 4.1.2 .. make me very angry ( Hardware quality of sony is way better than those phone then why this delay Sony:smileyplain:)
I am so sad to read this...
s now all the xperias are equipped with snapdragen and adreno gpu and in our mali400 too v got only a single core (NovaThor 8500).. i think its time to change our devices to Xepria ZU or Xperia I1(Togari) 
Yeah,we are from 2012 and we are so old...I do not have yet money for a change...