Preview at WWDC likely in June, followed by September launch.
New Mac Pros and Mac Minis Launching in August
CNet's Brian Tong has revealed on Twitter that "all new" next generation Mac Pros and Mac minis will arrive in late July or early August.
EXCLUSIVE: My sources tell me ALL NEW Next-Gen Mac Pros and Mac Minis will launch either end of July first week of August.Tong previously accurately predicted the arrival of new iMacs in the "end of April or 1st week of May". The iMacs did arrive in the 1st week of May as predicted. Tong indicates his source for the Mac Pro and Mac Mini updates are the same as for the iMac updates.
No details are provided on the specs of the machines besides the expected incorporation of Thunderbolt and Sandy Bridge CPUs.