Sorry that these got left out again - let me try and explain why this happens. Development of Planet Coaster continues (with lots of exciting things that I can't talk about right now) on a day to day basis, and changes are committed to source control in the "trunk" (or "mainline"). When we do a "smaller" update like this - the "double point" updates, we use the previous update as a base and selectively merge (or " cherry pick") fixes for specifically highlighted issues, or new features on to the new update from this trunk. When we do a "big update", such as the 1.1 Holiday Update we take this from the trunk, including all the fixes that have been made up until this point.
The reason we don't merge everything on to smaller patches like this is that it takes a great deal of time to merge and test all of these changes. Basing every point update on the trunk isn't really practical either as again the testing burden would be much higher, and we'd have to go through and remove lots of in progress features that aren't currently ready.
So this is why the new signs have been missing from updates - they simply haven't been merged to the "1.1.x" patches yet, but will be included in 1.2.