Think Secret is going head-to-head with AppleInsider, reporting that the iMac will receive an update at or around WWDC, which starts on June 11. The new iMac is said to feature a brushed metal enclosure.
The report states that the machines will benefit from the same upgrades as the MacBook Pro's earlier this week. Including the implementation of Santa Rosa, although the report doesn't mention LED screens.
As previously reported the site mentions that the 17-inch model will not be included in the line-up anymore.