Improved version of SX1 ?



I have a Sx10 and want to upgrade either to SX1 IS or SX20 IS. After reading many reviews and comparisons i wonder if until July 2011 there are any chances of Canon releasing a better version of the canon SX1 is which will provide improved quality?
I like the option of more frames per secs in the SX1 compared to the SX 20.I like the SX series (dont want rebel or smaller cameras) and need minimum 20x zoom, min 3 shots per sec , size not bigger than the SX series , 4 rechargeable batteries(the SX 30 is too big for me, no rechargeble regular batteries).
thank you