Why is online Dilbert drawn differently the last couple of days?

For the last two days in the online strip, Dilbert has been drawn in quite a different style, almost as though it was by a different artist. But the strip which was in yesterday’s physical newspaper was completely different subject-wise from yesterday’s online strip, and was done in the usual style.

What gives?

Note the tag - Vacation Artist John Glynn

Hah! Totally missed it. Thank you. I don’t remember this happening before, and I’ve been reading Dilbert since the mid-90s.