My personal experience was:
I was working in LinqPad5 and the toolbar asked me to restart for update, so I did.
This started LinqPad6.
My Intellisense stopped working so I checked the license and there was none.
I registered via the help menu using my LinqPad5 license and it redirected me to the LinqPad site where I was directed to upgrade to LinqPad6, paying for a new license.
It definitely upgraded me to a version that I didn't have a license for.
My personal experience was:
I was working in LinqPad5 and the toolbar asked me to restart for update, so I did.
This started LinqPad6.
My Intellisense stopped working so I checked the license and there was none.
I registered via the help menu using my LinqPad5 license and it redirected me to the LinqPad site where I was directed to upgrade to LinqPad6, paying for a new license.
It definitely upgraded me to a version that I didn't have a license for.