Esa and when my husband gets to pensionable age

Gwendoline1

Hi All, I was wondering if anyone as any idea on the following. My husband is my Carer and is on my esa claim, I’m unable to very little for myself and unfortunately he had to give up work. I also receive pip enhanced on both. 
What wil happen with regards to our esa ( income based ) when my husband reaches state pensionable age. A few years yet but I was just curious.
There again things are changing all the time so what is in stone now could well have changed again. Thanks anyway if anyone as any ideas.???