Hi sudokufan,
Issue 2 will be out by the middle of December, so even if you're ordering a printed copy you should be able to get it in time for Christmas!
With 100 puzzles in issue 1 you need to average over 3 per day in order to get the whole magazine finished in time for issue 2 - which would be pretty impressive going I think, given how large some of them are!
Gareth