1  Bitcoin-Qt/bitcoind version 0.8.1 is now available from:
 2    http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.1/
 3  
 4  This is a maintenance release that adds a new network rule to avoid
 5  a chain-forking incompatibility with versions 0.7.2 and earlier.
 6  
 7  Please report bugs using the issue tracker at github:
 8    https://github.com/bitcoin/bitcoin/issues
 9  
10  
11  How to Upgrade
12  --------------
13  
14  If you are running an older version, shut it down. Wait
15  until it has completely shut down (which might take a few minutes for older
16  versions), then run the installer (on Windows) or just copy over
17  /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
18  
19  If you are upgrading from version 0.7.2 or earlier, the first time you
20  run 0.8.1 your blockchain files will be re-indexed, which will take
21  anywhere from 30 minutes to several hours, depending on the speed of
22  your machine.