CCP has announced that its EVE Online expansion, Tyrannis, has been moved to May 26 and market seeding of Planetary Command Centers will hit June 8.
Per the Icelandic firm's blog:
In our regression testing, we have identified scalability issues with the Planetary Interaction feature, which led to code re-factoring that then needed further testing before being launched to Tranquility. Planetary Interaction is a unique feature in the sense that it is available to almost all players in the game providing opportunity for manufacturing for the masses, so ensuring that it runs smoothly on our cluster is of great importance to all.
EVE Gate will also be released on May 26th, with its web access to EVE Mail, Calendar and revamped contacts, both in-game and on the web.
If you play EVE Online, you will understand what senior producer Torfi Frans Olafsson wrote. If not, just come sit over here in the dark with the rest of us.