One would think so, but that's not how DLR operates. They've often touted things as coming in "spring," and then proceeded to not open them until early/mid-June. The most visible examples I can think of are World of Color, which debuted on June 11, 2010, and the DCA relaunch on June 15, 2012; technically it was still spring, but it sure felt like summer to me.
WDW, on the other hand, tends to follow a more colloquial schedule with "summer" beginning by Memorial Day and continuing through Labor Day. Big additions and promotions typically officially launch in late May, like the opening of Pandora at DAK last Memorial Day or the Seven Dwarfs Mine Train on May 28, 2014, both of which had extensive soft openings before their official openings. This year's Toy Story Land opening on June 30 is very unusual for them, because apparently it's so difficult and time consuming to build unthemed outdoor attractions and a lightly-decorated snack bar.
As much as it wants to be a world-class destination, DLR still thinks like a local's park much of the time. When local schools don't let out until mid/late-June, they don't see the need to expand operating hours and add promotions until then. It's kind of quaint and charming, but also kind of annoying for those of us who aren't bound by the soCal school systems.
Similarly, I would expect there will be another round of extensive AP changes that will be in full effect by the time Star Wars opens next year, which means they'll need to roll out some time this year. Given the lack of rumors at this point, it seems safe to assume that it probably won't open until July at the earliest