We have bought a new server with some redundant hardware which will make it more reliable against a complete stop.
The old server went pretty well, but it's quite old now.
Changing the server is a complex operation. We have done it once in the past and it went smooth, but it is complex.
After the new beta application is out and tested, we will do some internal testing with the new server and then in one day the change. In principle, you should only notice that the server is down for few hours and then up again as before. We will notify when this is happening.