It's not time to panic yet, but this is a sign that you should start getting your TechEd plans ready. This is the first year in the US that TechEd is split into two events.
If you're reading this, then you're probably more interested in the developer conference.
Although the developer conference is June 3-6 and the IT conference is June 10-13, they both have the same set of dates for registration. Around May is when registration started getting dicey the last few years although it's hard to predict what will happen with the new logistics.