Yes, this is how the installation went, including the ca-certificates-mono.
No, 526 is no typo, you can download it from the source code and compile it yourself. Subjective impression is, that it runs faster than 525. Maybe due to the change in regards to css
snippet from history:
07/07/2016 v1.1-beta.526
- Fixed Camera widget 'hanging' bug when displaying multiple cameras on a page, also increased refresh speed
- Fixed side menu refresh bug
- Fonts are now embedded in css (no more delay downloading from google fonts)
- Fixed SSL error when sending e-mails
- Other minor fixes/improvements