I don't have specifics on that.. as I said there will be a blog post
1.5 will be Due only at the beginning. shortly after there will be a 1.0.2 with some of the enhancemens backported (there are some nice user experience improvements in it)
Later on when 1.5 is stable we'll merge and have only one IDE.
if you can point me to an issue here Google Code Archive - Long-term storage for Google Code Project Hosting. I'll have it checked.
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