I'll be a dissenter. There's a reason half-step calibers continue to fall from favor. They aren't different enough from the caliber on either side of it to make it be something either of the others can't accomplish.
17, 20, 22, 24, 26, 28, 30, 33, 37. Those are the calibers that will continue to flourish in rifles. The "in betweeners" will continue to die off as time and knowledge progresses. The manufacturers have demonstrated that these are the calibers they are going to support. Rare is a press release directed at a caliber other than those. The manufacturers and distributors I talk to intend to keep it that way as it makes stocking desirable items easier when there are fewer.
The reality is, there isn't a single thing a 25.06 can do that a 6.5x284 wouldn't do better.
