innodb_doublewrite_file on Percona 5.6 ?

MySQL & MariaDB Percona Server for MySQL 5.6
1

Will features like

innodb_doublewrite_file

and

innodb_ibuf_max_size

be ported to Percona’s 5.6 release?

Perhaps once it is GA ?

I don’t see them in the variables right now or maybe they have been renamed but I do not see anything similar.