Same situ for me...cant wait till feb for upgrade...but then i hear the S4 is comin' out in March [but i hear it wont be 5.5" tho]...
It definitely won't be 5.5" I'd say 5" at the most for the S4. Samsung isn't looking to essentially merge the Note and the S series into a single phone, which going beyond 5" for the S4 at this point would come close to doing. Plus, if they were to bump the S series above 5", they'd end up being their own competition in the huge screen category. It just makes more sense for them to keep the S series in a range that would have the most mass appeal, and at this point and for the foreseeable future, that's 5" and under.