Those numbers are preposterous, the latter is a good fraction of Iran's GDP. There is no way that much money left Iran without there being a major effect on the economy. Obviously Iran has invested billions into Syria, but it's not as if they don't expect serious economic gains when it comes to mediterranean access and post-conflict reconstruction. Regardless, even for purely strategic purposes Syria is basically the only thing that stands between Iran and Hezbollah, no Syria = no leverage over Israel = bad times for Iran.
Those are all major projects unveiled less than a year ago, you cannot expect new shiny weapon systems just because the last one was displayed a little while ago, in fact more has been unveiled in the past 3 years than there has been in the 5 years preceding. Iran has a problem with premature announcements, weapon systems unveiled that are still in development/prototyping stages for years to come. It is likely that Iran exhausted all of it's 'major projects' in the run up to last years presidential election. There are still likely multiple 'major projects' under development atm alongside existing ones such as Bavar or Karrar, but it's just too premature to unveil them.
