T-Mobile going to get on the EDGE bandwagon?

Honestly, with all the other carriers here in the US already either deploying or testing high-speed 3G wireless networks, isn't it a little weird that T-Mobile still hasn't upgraded their network to EDGE (which is a like a faster version of GPRS), let alone announced their plans for 3G? They won't say anything official about it, but our buddy Om Malik noticed that Ericsson announced a deal to sell some EDGE-compatible cellular network equipment to T-Mobile, which means they're probably going to roll EDGE out not too long from now.