When people show up to E3 with a video saying "These are the things we are doing with our game this year," and keep it posted on their own site, then it isn't rumor or speculation.

http://www.swtor.com/info/media/trailers/preview-exciting-new-reveals-e3 ...A video posted earlier this year on the fourth of June, boasting that coming to Old Republic this year will be a level cap increase included among other updates. Yet here we find ourselves, the 9th of December, with 1.6 patch planned only 2 days away. Unfortunately, a read through 1.6 patch notes from the play test server reveal no information about a level cap increase. Levels of gear modifications are already reaching 63, a number in excess of 10 levels beyond the current, original level cap of 50. With only 20 days left in the year beyond this update, one is left to wonder; when will we find ourselves with our first level cap increase? For that matter, when might we find new planet Makeb?

You already have Polarity Shift for increasing your Alacrity that will cap out about 30% anyway. Boosting your damage output with power is much better. Get the Dread Guard Relic of Boundless Ages.