EDIT: There was no major issue with the release candidate, so here is the official release.
http://download.electrum.orgRelease notes:
# Release 2.7.0 (October 2016)
* The wallet file format has been upgraded. This upgrade is not
backward compatible, which means that a wallet upgraded to the 2.7
format will not be readable by earlier versions of
Electrum. Multiple accounts inside the same wallet are not
supported in the new format; the Qt GUI will propose to split any
wallet that has several accounts. Make sure that you have saved
your seed phrase before you upgrade Electrum.
* This version introduces a separation between wallets types and
keystores types. 'Wallet type' defines the type of Bitcoin contract
used in the wallet, while 'keystore type' refers to the method used
to store private keys. Therefore, so-called 'hardware wallets' will
be referred to as 'hardware keystores'.
* Hardware keystores:
- The Ledger Nano S is supported.
- Hardware keystores can be used as cosigners in multi-signature
wallets.
- Multiple hardware cosigners can be used in the same multisig
wallet. One icon per keystore is displayed in the satus bar. Each
connected device will co-sign the transaction.
* Replace-By-Fee: RBF transactions are supported in both Qt and
Android. A warning is displayed in the history for transactions
that are replaceable, have unconfirmed parents, or that have very
low fees.
* Dynamic fees: Dynamic fees are enabled by default. A slider allows
the user to select the expected confirmation time of their
transaction. The expected confirmation times of incoming
transactions is also displayed in the history.
* The install wizards of Qt and Kivy have been unified.
* Qt GUI (Desktop):
- A fee slider is visible in the in send tab
- The Address tab is hidden by default, can be shown with Ctrl-A
- UTXOs are displayed in the Address tab
* Kivy GUI (Android):
- The GUI displays the complete transaction history.
- Multisig wallets are supported.
- Wallets can be created and deleted in the GUI.
* Seed phrases can be extended with a user-chosen passphrase. The
length of seed phrases is standardized to 12 words, using 132 bits
of entropy (including 2FA seeds). In the wizard, the type of the
seed is displayed in the seed input dialog.
* TrustedCoin users can request a reset of their Google Authenticator
account, if they still have their seed.