And it's wearing a slicker, lighter new soft-top. Goodbye hard-top, we barely knew thee.

The 2019 BMW 4 Series Convertible has been snapped again, this time getting out and about without a car carrier obscuring its new soft top.

That's right, there's no complex folding hard-top here. BMW has taken the same approach with the Z4, changing tack from its predecessor and re-embracing the soft-top life, while the 8 Series cabriolet is expected to wear a fabric hat as well.

BMW isn't alone in running a soft-top on its mid-sized convertible: both the Audi A5 and Mercedes-Benz C-Class take the same approach.

The reasons are easy to understand. With multi-layer constructions and clever material choices, a modern soft-top offers similar noise suppression qualities to a folding metal roof, while saving weight, space and costs.

Expect to see the usual array of four- and six-cylinder engines under the bonnet, along with the 'most powerful four-cylinder ever offered in a series-production BMW. It's already been confirmed for the 3 Series, making it a surefire starter in the 4er as well.

There's talk of a three-cylinder entry-level engine, too, although it's not confirmed. Given BMW is pushing to electrify its range, we'd also keep an eye out for a hybrid variant, likely of the plug-in persuasion.

BMW is gearing up to release its new 3 Series, which means the 4 Series isn't likely to be far behind. Given the degree of camouflage fitted to the prototype snapped here, we'd suggest a launch sometime next year is on the cards.

Click on the images for a closer look at the new 4 Series Convertible and its slinky soft-top.