Are these new changes with the latest update?

It seems you are on a world with the new upper limits - where the player limits and forgotten limits have changed. Tunneles, POI's and Forgotten bases have increased in size as has the maximum for the Fortress. Which world is this on?

The existence of the higher POI's and high forgotten bases is 'normal' on these increased limits.

Thanks gamerdruid, this is on Closed Beta 2

Yes, CB2 had their levels increased as a test. It's the first world to have levels increased after launch. You will also find that the forgotten bases regenerate at a higher level once they're destroyed and get to the point of regeneration. It may be worth killing a group around you to see what levels they come out at, but they should be similar to the POI's and Tunnels in the are of the bases, as per normal worlds without the increase. IE an are with a POI or tunnel of 60 should regenerate at around that level.

Here's a snapshot of a level 63 tunnel on the PTE: http://prntscr.com/uo9149

As you can see, level 60+ bases abound.

Where some of your bases are will change if you kill the forgotten bases, from 40's to top 50's and maybe low 60's.