Yeah, that's the IF diet that has caught on as of late which is called lean gains. Apperantly there's quite a few health benefits that the fasted state provides. I haven't looked into them but I think Necrosis has posted some studies on the nutrition board and I'm sure the leangains guy has posted some on his website also.
So with that leangains IF diet you train 3 days a week and eat 20% above maintenance during those days. The other 4 days you're eating 20% under maintenance. So yeah... you have maybe two or three meals during the 8 hour feeding period and then you begin your 16 hour fast.
I posted a link if you wanna look into that.
This is somewhat different to what I understand a true IF diet to be.
You need to run a calorie deficit to lose weight, so eating the same calories as you do now but fasting in the middle is rather pointless.
Using an intermittent fast as a means to creating a calorie deficit makes more sense. Keep your diet as it is in general terms. Finish your dinner at 7pm one day and then fast till dinner at 7pm the next day. Just eat a normal meal when you break the fast.
It is a lot easier than carrying around plastic tubs of diet food all over the place if you have a busy lifestyle. You don't eat rabbit food 6-7 days of the week.
Bottom line - it's just another way to create a calorie deficit.