After doing some further research into this, here are my findings. Currently, the only OS that is out and supported on the N1100-ON is DNOS 6. There are several partners that provide different operating systems. Whether or not an OS is supported on the N1100 will be dependent upon these partners and the updates they provide.  Here is a list of partners: [URL] To recap, the N1100-ON is future ready, but until the other operating systems are updated to support the N1100-ON, DON 6 is the only available OS. 
I have a Dell Networking N1148T-ON switch which apparently supports ONIE. However, i've not been able to find any ONIE OS images that support the switch itself - either from Dell and other Switch OS vendors/open source projects. The only ONIE downloads for the N1100-ON series on Dell's support site seem to be the ONIE firmware itself rather than an ONIE OS (and indeed, the firmware has no installation instructions!). Are there any compatible ONIE Operating Systems for the N1100-ON series? I'd love to make use of a lot of the API functionality that ONIE switch OSes tend to offer!
ONIE Support for Dell Networking N1100-ON Series?