Can see this getting voted cold due to some negativity around LISA's but Skipton are releasing the first Cash Lifetime ISA this Thursday, with those who registered their interest receiving emails today allowing you to apply early.
Interest rate: 0.5% AER variable
Interest paid: Annually
Opening restrictions: Must be aged 18-39 to open it
Access: Online only
Min pay-in: £1 | Max pay-in: £4,000/yr
Accepts transfers: Yes
FSCS protection: Full £85,000 UK savings safety guarantee
Personally, I'll be transferring my Help to Buy ISA in this financial year (there's a few tricks posted by Martin Lewis on this...). By June 2018, those who have paid the maximum on both the H2B and LISA since launch, will have £3,100 towards a house deposit.
The bonus can also be used for retirement, but this should not be treated as a replacement for a workplace pension.
For full info, check out MSE (http://www.moneysavingexpert.com/savings/lifetime-ISAs#skipton)