Worse off but still better than not having a limited company and doing it the dividend way.
As thre are more changes than just the rate of tax on the dividends (I think the first £5k is at the old normal rate and then a higher rate over that from memory) but then other changes relating to NIC etc, everybody will be different.
The only sure thing is that you will be paying more tax overall and your take home will be less.
Still worth doing? Yes. There is obviously a minimum income where this is worth setting up before the costs outweigh the tax savings and this is now a much bigger income. I would never suggest that somebody on say £30k income did it but i suspect all the people setting up limited companies in this way are on much more than that.
Basically to roughly work out how much worse off you will be
(Dividend - £5,000) * 7.5% + £2,000 (if you claimed the NIC EA which everybody should have been
So a dividend of £50k incurs £3,375 of extra tax plus £2k more due to the NIC EA so £5,375 in total.
It doesn't quite work out like this as there is the increase in personal allowances so you will be adjusting the dividend payment down by the same amount to get the same total "wage" plus corporation tax decreases by 1% each year.
The big thing is whether NIC EA will be removed from limited companies where thw only other employe/director is the wife/husband. This has not been clarified yet by HMRC.