Sony's Scott Rohde's has explained that the game's absence was due to timing and nothing more.
The SCEA man told 1Up: The best way I can answer that is something that Sony does and were very proud of this is that were going to ship a game when we feel its ready.
When its fully baked and when its ready. And with everything else that were showing at this show, we announced a million different things at this show, we just didnt feel that the timing was right to show that product at this show.
Were going to show it when its ready, and when we think that its worthy to show based on everything else that developer has done.
When you've got a mind like Fumito Ueda making games for you, then it's probably best to afford him the creative freedom to achieve his aims. And while Fumito wasn't rushed to get something ready to show at this year's E3, Sony's Ron Eagles did hint that the game might appear at the Tokyo Game Show.
And theres more dates on the calendar than just E3. Read into that what you will. Theres nothing official that we can tell you other than The Last Guardian continues in production and we cant wait to show you what Ueda-San has been up to. The game looks fantastic.