Representatives of the popular bitcoin wallet GreenAddress reported about the support for the Segregated Witness (SegWit) solution.
— Bitcoin Magazine (@BitcoinMagazine) 6 сентября 2017 г.
As noted, users of GreenAddress will receive notification of an upgrade during the next authorization, as well as the choice of whether to support the SegWit solution or not. GreenAddress representatives also note that if the user does not see the appropriate notification about the upgrade, then most likely his version of the wallet is outdated and he needs to be updated to the latest version.
We have supported segwit in our testnet environment for a long time now, and with segwit locked in on the main chain, we have deployed the changes needed to enable this to the main service. When you next log in to your wallet you will be upgraded to segwit and offered the chance to opt-out. If you don’t see the upgrade prompt, your client is too old and you will need to update it. Once segwit is enabled on your account and you have generated at least one receive address, it will be locked in and you will no longer be able to disable it.
Also the GreenAddress noted the low cost of SegWit transactions.