Since everything was referred to as 2015/16 or 2019/20 etc., one has to assume there will still be tax years, with an annual amount for each year. Surely it would be impossible to have "tax years" abolished.
It's looking even worse for UK-centric pensioners with a US tax obligation. By 2016/17 the personal allowance will be £11,000, and starting next year you will now have the additional "savings personal allowance" of £1,000 (@20%) and £500 (@40%). On top of tax free cash ISA's, FTC's are disappearing rapidly!