is upgrade to plasma 5.3 supported

[fantaz]

Hi all,
given that plasma 5 users of 14.04 had to make a clean install of 14.10, how safe is to install plasma 5.3 from backports repo and expect that upgrade to 15.10 would succeed?

[sithlord48]

upgrade to 15.04 first then use the kubuntu ppa to add 5.3 .

[fantaz]

sorry for not being clear: I had installed 14.10 plasma 4 - Upgraded to 15.04 and thinking about installing plasma 5.3 from backports repo.

My question is this:
Is it expected for users who had installed plasma 5.3 from backports repository to reinstall their system when the 15.10 arrives, or the upgrade to 15.10 will be smooth?

[fantaz]

thanx