The 10,000 killed, 30,000 wounded numbers were the last official number released by Ukraine up to June 3rd. There's been a month of fighting since then including the loss of several strategically important towns so the number will be higher.
Given they're rounded I think both numbers are estimates rather than actual numbers, I also find it weird that the wounded number is exactly 3x the KIA count.
They also didn't release the numbers of MIA, a lot of families have hope their sons/husbands didn't die and instead deserted or were captured. Ukrainian civilian death claims appear to be unrealistically high (5x UN numbers), I imagine a lot of soldiers are being considered civilians. There was a BBC report the other day about a "war crime" where a TDU unit who changed into civilian clothes were caught and (allegedly) executed on the spot for perfidy. No doubt Ukrainians are counting them as civilians rather than combatants.