New versions of Lightroom will only be available using a subscription service.
A perpetual licence will still be sold for Lr6, but this product won't have any new features or bug fixes after the end of this year.
If you want Lr and would like to manage your own files, you'll need to get Lightroom Classic CC.
Lightroom CC is basically a less featured product than Lr Classic CC, but with the capability of being able to edit your images across multiple devices (phone, tablet, computer).
Lightroom Classic CC will cost £10 a month - which it appears possible to prepay, but you're still only renting the software.
Below is a handy flowchart
I nabbed from here to help you decide which new Lr you may (or may not) need :

I'm really not comfortable with the idea of renting my software, especially software that I'm using on something as important to me as my photography is.
I'm not likely to do any upgrading of the software until the new year anyway, so I'll just sit here getting splinters in my arse for the next few months, I think.
Here's the link to the Adobe Creative Cloud pricing page.Mark