We are pleased to announce the availability for download of Magento Version 1.0 with Revision 19700. This revision includes many small fixes, small modifications and some slight performance enhancements, which are detailed in the release notes.
*Please Note: Instructions for Upgrading Magento with a full package, via SVN, via the MagentoConnect Manager and using SSH shell access are available in this wiki post.
Please read the wiki before upgrading.
If you are using the Magento Connect (PEAR Packages) we also recommend upgrading the Magento Connect Manager here