Personally I think the 052D will be much heavier than 6800T.
Well according to that they'll have 058 in a few years which is basically a 10k ton cruiser and probably be the arleigh burke/king sejong class rival you want. Although it sounds like it's not based on the 052 hull, so it may have that advantage over the burkes in they're using a newer more modern hull (stealth wise, and potentially unconventional hull).
With some 12 058's planned they can afford to have a larger number of 7000 ton 052D to act as the larger workhorse of PLAN (compared to current 054A). You don't need a 9000 ton, 96 cell DDG to show the flag or patrol the coast off somalia. A 7000 ton DDG could feature anywhere from 48-64 VLS cells and possibly 2 hangars too, keeping a potent but economic missile capability that is suitable for long endurance blue water, lower intensity operations (anti piracy for instance) but also act in a CVBG in it's own right, with a 48+ common VLS.
The way I saw the PLAN's future (late 2020s) force comp previously was either;
X number of ~15,000 ton CGs/DDGs, supported by 4*X numbers of ~6000 ton "FFGs" (with a ~8000 ton 052D having only production up to 8). Two major surface combatant classes, the FFG class will be used as the work horse for both CVBG/SAG and low intensity conflicts, while the cruiser class is reserved for CVBG and conflicts with nation states.
Or, what this chart is suggesting, Y number of 10,000 ton CGs/DDGs, 1.2*Y number of 7000 ton DDGs, 2*Y number of 5000 ton FFGs. You'll keep frigates as frigates in the "traditional" sense, potentially emphasising ASW and medium area defense and used more than the larger cousins to show the flag regionally, while destroyers are used for wide area air defense but still viable for low intensity conflicts. The cruisers are to be used exclusively in high intensity conflicts against other nation states. All will be capable of integrating within a CVBG/SAG.
The second option allows for more ships at similar overall tonnage compared with the first and thus greater flexibility.
Either way the PLAN will be looking into a massive increase of overall tonnage in the next few decades. Apart from the US I don't think any other country has such an ambitious schedule (assuming this chart's legit)