There is a new path on the Eastern side but it only goes as far North as Stirling, then onto a bike lane to Cedric St. There's about 1km of footpath along the N side of Cedric to Odin Rd, cross that and the 'Bicycle Boulevard' takes you all the way to Scarborough. The Boulevard is along streets where the speed limit is 30km/h and all side roads have Give Way or Stop signs so that bikes have priority. I've been further North on both the coast path and the Freeway multiple crossing paths a few times, but don't like either, so I try to put more kms in further South, either by going right around the river via Canning Bridge or down to North Freo through Nedlands, Claremont and Mosman.
This route shows the Bicycle Boulevard.