If you expect an Atom replacement in Q2 2009, that simply won't happen. According to Intel's latest plans, single-core Atom 230 and dual-core Atom 330 are the only two to be available all the way until Q3 2009.
We are not sure if this means that there might be a new Atom in Q4 2009, but the plan indicates that Intel plans to stick around with its very successful chips for a while.
In Q2 2009 Intel might let manufacturers use dual-cores for netbooks, but this certainly won’t happen by the end of this year. Since Intel doesn’t really have any serious competition in this area they certainly don’t want to compete with themselves.
We hope that there will be a chipset that might saves us from 945GC misery.