It's not available yet. Early builds will be available on the forum about April 1. If you purchase now, we will notify you when MC25 is available.
In the meantime, the license will work with recent builds of MC24.
If you purchased a new license or an upgrade license after December 14, you received an MC25 license. Thanks for your purchase.
If you have problems, please read this:
Restoring a License. You can read more and ask questions here:
License Problems.
Using an MC25 license with MC24 requires the latest build of MC24.
Old Versions can be downloaded.