The E1-1200 and E2-1800 are based on the good old Bobcat core and they are a stopgap measure until 28nm chips become available. Still, they are a very good alternative to Atoms, especially in the desktop market.
The E1-1200 is clocked at 1.4GHz and it features HD 7310 graphics with 80 shaders clocked at 500MHz sans turbo. The E2-1800 runs at 1.7GHz and features a similar HD 7340 graphics core with 80 shaders, but it can turbo overclock from 523MHz to 680MHz.
We should see quite a few Brazos 2.0 based products at Computex.