Since its release we've seen an uptick in folks deploying 8.1.0 to their firewalls, and that's a great thing. I just want to throw out a word of caution before doing so however; while 8.1.0 is one of the most stable base releases Palo Alto Networks has published, you need to do your homework before deploying this in any environment.
If you have access to any sort of LAB equipment, this is where you should be installing 8.1.0. Start testing your configuration in a LAB environment so that you can have a knowledgeable estimate of when you feel comfortable deploying 8.1 to your production equipment.
If you happen to utilize your LAB equipment in a Change Management process, take note that you are running a different version of PAN-OS when you actually test changes. Something that didn't work in your 8.1.0 LAB may work perfectly fine on 8.0.8 that you have running on your production equipment. On the other hand, something that works out perfectly fine on 8.1.0, may not function on 8.0.8 due to a bug being patched between versions.
If you do not have access to LAB equipment to verify that your production configuration will actually fully function on 8.1.0, I would personally highly advise you to keep 8.1.0 off your production equipment.
Limitations of 8.1.0 are fairly small, however there are 13 pages of known issues within 8.1.0 along with 3 known issues specific to a WF-500 appliance. Before you contend with loading 8.1.0 on production equipment you should take the time to go through all of these known issues and decide if your environment would actually experience them and if you can work around them until they are patched in future maintenance releases. Causing an outage because you want to utilize the awesome SSL Decryption Broker, or the awesome new hit counters, is likely not going to go well.
Generally this boils down to following Palo Alto's recommended upgrade procedure and just doing your own due diligence before upgrading to 8.1. I think there are a few people that are getting wrapped up in the truly amazing feature improvements of 8.1, and throwing best practices out the window. If you don't have LAB equipment to properly test things out, let those of us that do find all of the bugs before causing an outage due to wanting a new software upgrade quickly.
If you truly want 8.1 and just simply can't wait to upgrade, I'd at least make a post here about what your configuration looks like prior to upgrading. We have a lot of people within these forums that have been running 8.1.0 since the beta was released on LAB equipment and home deployments that can likely take a glance at what you are doing and at least give you some real-world experience on what you should expect.