Stata 10 is now live. Please note that due to a change in the structure of the .dta files, and a licencing issue with the new version of Stata Transfer, if you wish to open these in an older version of Stata please do one of the following
1. Use the version command.
If you use this command as standard there won't be a problem of saving to an older version.
2. or use the saveold command. Instead of using, save filename, replace, use saveold filename, replace (this saves the data as stata7, which can be read in 8, 9 and 10).