The MX5 is powered by a  2.2 GHz clocked Helio X10 MT6795T and this will be 200 MHz faster than the standard Helio X10 MT6795. Meizu MX5 was faster than most of its Helio X10 competition including HTC and there is a good chance  the MX6 will get the MT6797T a faster version of Helio X20 too.

Sources within China call this processor Helio X25 but do not think MediaTek would make such a radical branding departure. The new Helio X20 MT6797T might end up 200 MHz faster due to its Cortex A72 cluster and this would result in having up to 2.7GHz of max frequency.

The additional 200 MHz should boost the SoC in tests which is how how you might get 7000+ in Geekbench multi CPU scores.

We heard that the Meizu MX6 should might start shipping in April, but there is  no final confirmation of the shipping date

We  expect to see the Helio P10 and X20 phones hitting the market but our sources indicate that we are weeks away from either Helio P10 and X20 phones. We saw some high profile announcements of the Helio P10 at the Mobile World Congress from big names including Sony, but Meizu is likely to give the Xiaomi Mi5 a run for its money.