Although Fujino only made 5cg for the combat event, it will not be very large. It seems like 2cg will definitely be blowjob scenes, and 3cg will probably be sex.
Misarmor already answered, but I'd like to mention that Fujino doesn't always say the exact amount of stuff they put into the update in every progress report. Misarmor already explained that "battle event" means an ambiguous amount of CGs were made for whatever Fujino wrote, and this is generally what's noticeable with Fujino's progress reports. Unless Fujino specifies the CGs are for a scene, you can make a guess that it's at least 2 to 3 CGs for an event. Sometimes it's a lot more than 2 or 3.
Another thing to point out is that while Fujino does mention making a battle event, they also mention the whole "I plan to make Inoda and Asuna go further in battle." statement. If I'm being honest, it's probably in reference to the "event". But sometimes statements like these can imply that Fujino made more CGs, and just never mentioned how much they did.
The most recent battle event that popped up came as a surprise with 10 CGs out of nowhere. Up until that point, the only kind of info related to it was basically the 7.22 progress report. The next report that came out mentioned the 10 battle CGs right before the update was released.
But yeah, Fujino doesn't always convey the exact amount of work they did. It's usually a pleasant surprise too, since it's usually more than what's reported due to Fujino's vague/ambiguous statements. Fujino mentioned the word "event" about 7 times so far for this upcoming update. Only 2 of those events Fujino mentions specifically how many CGs were made for it. This would be 2 CGs for a Suguha event, and 4 CGs for an Asuna event. Any other Asuna, Sinon, or Liz events don't have any specified number of CGs mentioned for them.
This basically implies a lot of work is being done, and there's at least another week to go.
P.S.
I'm getting antsy rofl.
