From July 1 2014 all ISAs will become New ISAs (NISAs). This applies to all existing ISAs and new accounts opened after 1 July. The Government is changing the name to reflect the significantly increased limits and flexibility that will be available to account holders.
Using NISAs, you will be able to split the amount you pay into an ISA between a Cash NISA and a Stocks and Shares NISA as you choose - up to the new overall annual NISA limit of £15,000. Previously, it has only been possible to save up to half of the overall ISA subscription limit in a Cash ISA.
Any subscriptions you have made to an ISA since 6 April 2014 will count against the £15,000 NISA subscription limit for 2014-15.