Replacement rifle for the Australian Army?

According to this, the Australian Army Rifle isn't doing so well.

The reason given by the author is ergonomics.

The author claims the M-4 is the better way to go.

There are other problems with the F88, but I hope this is enough to illustrate that the current plan of continuing on to another version of the F88 (the Enhanced F88) that does little or nothing to address those issues is a pretty bad idea. So what’s the alternative? There’s only one answer—the M4 Carbine employed by our U.S. allies. It’s lighter, cheaper, and more robust than the F88. It’s modular, battle-tested, constantly refined, truly ambidextrous, and fully adjustable. The M4 beats the F88 hands down. Of course you shouldn’t take my word for it—instead, try asking the operators of the ADF’s elite special operations units whether they plan on turning in their M4’s when the ‘enhanced’ F88 begins production. But don’t expect a polite answer.

I guess that depends what you are trying to do. The 5.56mm loses some punch when fired out of such a short barrel like the M-4. The M-4 is great for close-in and door-kicking.

Don't know. Would like to hear more from the Army. If the M-4 is of such interest, should not the Army Squad base its fire team around one member having the M-27 the way the USMC is going?

In the end, not for me to say. Interesting though.